I can no longer drag new snippets into mini bridge after an upgrade to CC. When I try to drag an item into mini bridge I see a green plus icon for a fraction of a second then in disappears. This is the second computer (macbook) I've had this problem on. Similar situation with both computers. Everything worked when I was on CS6, but after installing CC it stopped working. Uninstalling CS6 doesn't seem to have any impact on the problem.

I don't think I understand what you're trying to do. When you export a snippet, you're creating a separate IDMS file in an external location. If you wanted to move the snippet to a different external location, it would make sense to use the full Adobe Bridge application.

If I want to use a snippet file on a page, I can definitely drag the snippet from MiniBridge onto the page, and I get the Place cursor, and can place it in InDesign CC.